AMD Radeon HD 6990 vs AMD Radeon RX 6500 XT
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM Radeon RX 6500 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 143.9GB/s)
512 additional rendering cores
AMD Radeon RX 6500 XT 's Advantages
Released 10 years and 10 months late
Boost Clock2815MHz
More VRAM (4GB vs 2GB)
Lower TDP (107W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2.55 TFLOPS
Radeon RX 6500 XT
+126%
5.765 TFLOPS
Graphics Card
Mar 2011
Release Date
Jan 2022
Northern Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x4
Clock Speeds
-
Base Clock
2310 MHz
-
Boost Clock
2815 MHz
1250 MHz
Memory Clock
2248 MHz
Memory
2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
143.9GB/s
Render Config
24
Compute Units
16
-
-
-
1536
Shading Units
1024
96
TMUs
64
32
ROPs
32
-
-
-
-
RT Cores
16
8 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
1024 KB
-
L3 Cache
16 MB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
90.08 GPixel/s
79.68 GTexel/s
Texture Rate
180.2 GTexel/s
-
FP16 (half)
11.53 TFLOPS
2.550 TFLOPS
FP32 (float)
5.765 TFLOPS
637.4 GFLOPS
FP64 (double)
360.3 GFLOPS
Board Design
375W
TDP
107W
750 W
Suggested PSU
300 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x HDMI 2.1
1x DisplayPort 1.4a
2x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Antilles
GPU Name
Navi 24
Antilles XT
(215-0807027)
GPU Variant
Navi 24 XT
(215-135000006)
TeraScale 3
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
6 nm
2.64 billion
Transistors
5.4 billion
389 mm²
Die Size
107 mm²
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.2
N/A
Vulkan
1.3
-
-
-
5.0
Shader Model
6.6
